diff --git a/README.md b/README.md
index 62c03c4..3b6730f 100644
--- a/README.md
+++ b/README.md
@@ -219,6 +219,14 @@ Alternatively, configuration can be provided as part of a bundle:
 > **Warning**: As of the time of writing the workaround to set the CHAP
   credentials via the esx cli is still needed.
 
+## Development
+
+The charm needs to pull in its dependencies before it can be deployed. To
+pull in the dependency versions that correspond to this version of the 
+charm then run the `build` tox target.
+
+To update all dependencies to their latest versions then run the `update-deps`
+tox target.
 
 <!-- LINKS -->
 
diff --git a/build-requirements.txt b/build-requirements.txt
index 81ba415..1b770a7 100644
--- a/build-requirements.txt
+++ b/build-requirements.txt
@@ -1,2 +1 @@
 mod/charm-helpers
-#file:///home/ubuntu/branches/ceph-iscsi/mod/charm-helpers
diff --git a/charm-init.sh b/charm-init.sh
new file mode 100755
index 0000000..6437235
--- /dev/null
+++ b/charm-init.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+UPDATE=""
+while getopts ":u" opt; do
+  case $opt in
+    u) UPDATE=true;;
+  esac
+done
+
+git submodule update --init
+
+if [[ -z "$UPDATE" ]]; then
+    pip install -t lib -r build-requirements.txt
+else
+    git -C mod/operator pull origin master
+    git -C mod/ops-openstack pull origin master
+    git -C mod/charm-helpers pull origin master
+    pip install -t lib -r build-requirements.txt --upgrade
+fi
+
+ln -f -t lib -s ../mod/operator/ops
+ln -f -t lib -s ../mod/interface-ceph-client/interface_ceph_client.py
+ln -f -t lib -s ../mod/ops-openstack/ops_openstack.py
+ln -f -t lib -s ../mod/ops-openstack/adapters.py
diff --git a/charm-prep.sh b/charm-prep.sh
deleted file mode 100755
index 0f29b41..0000000
--- a/charm-prep.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-rm -rf lib/*
-
-pip install -t lib/ git+https://github.com/juju/charm-helpers.git
-
-git submodule init
-git submodule update
-(cd lib; ln -s ../mod/operator/ops;)
-(cd lib; ln -s ../mod/interface-ceph-client/interface_ceph_client.py;)
-(cd lib; ln -s ../mod/ops-openstack/ops_openstack.py)
-(cd lib; ln -s ../mod/ops-openstack/adapters.py)
-(cd mod/interface-ceph-client; git pull origin master)
-(cd mod/operator; git pull origin master)
-(cd mod/ops-openstack; git pull origin master)
diff --git a/mod/operator b/mod/operator
index 60c43f8..58ff602 160000
--- a/mod/operator
+++ b/mod/operator
@@ -1 +1 @@
-Subproject commit 60c43f81e36139ab4044c185247eb27fe389bce6
+Subproject commit 58ff602b29763172c39502de0fa64de965cfbea7
diff --git a/tox.ini b/tox.ini
index 4c3de17..cf9f42d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,6 +18,7 @@ commands = stestr run --slowest {posargs}
 whitelist_externals =
     git
     ln
+    charm-init.sh
 passenv = HOME TERM CS_* OS_* TEST_*
 deps = -r{toxinidir}/test-requirements.txt
 
@@ -83,26 +84,13 @@ commands = {posargs}
 basepython = python3
 deps =
 commands =
-    git submodule update --init
-    pip install -t lib -r build-requirements.txt
-    ln -f -t lib -s ../mod/operator/ops
-    ln -f -t lib -s ../mod/interface-ceph-client/interface_ceph_client.py
-    ln -f -t lib -s ../mod/ops-openstack/ops_openstack.py
-    ln -f -t lib -s ../mod/ops-openstack/adapters.py
+    ./charm-init.sh
 
 [testenv:update-deps]
 basepython = python3
 deps =
 commands =
-    git submodule update --init
-    git -C mod/operator pull origin master
-    git -C mod/ops-openstack pull origin master
-    git -C mod/charm-helpers pull origin master
-    pip install -t lib -r build-requirements.txt --upgrade
-    ln -f -t lib -s ../mod/operator/ops
-    ln -f -t lib -s ../mod/interface-ceph-client/interface_ceph_client.py
-    ln -f -t lib -s ../mod/ops-openstack/ops_openstack.py
-    ln -f -t lib -s ../mod/ops-openstack/adapters.py
+    ./charm-init.sh -u
  
 [testenv:func-noop]
 basepython = python3